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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Help me design a .338-375CT projectile
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<blockquote data-quote="groper" data-source="post: 410536" data-attributes="member: 12550"><p>With little choice in ultra high BC hunting bullets suitable for the big .338's and .375's I've decided to look into swaging my own for personal use and if they prove to work well, I may decide to Take it further and sell some aswell, there seems to be a large gap in the market where the bullets have not kept up performance with the advances in new cartriges. </p><p></p><p> To start with I'm looking at doing a .375cal rebated boattail design around 380-400grns to work in a 10 twist barrel or tighter. Overall length would be about 6 calibers, and if successful I'd move onto a .338 version of a similar design. I've been playing with some numbers on the JBM websites bullet drag calculator and it would seem not too difficult to get a BC better than 1.0 Whilst not deviating to far from convensional designs.</p><p></p><p>What I am unsure of is the finer details like jacket thicknesses in order to be able survive 3400fps muzzle velocities without 'nose slump' or exploding bullet issues, yet still expand and provide good terminal performance on game. Any help in these finer design elements would be greatly appreciated and perhaps together we could produce some great bullets that we all can enjoy, maybe they could even be sold thru the LRH site once they're up and running since it would be a product created jointly by LRH members <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="groper, post: 410536, member: 12550"] With little choice in ultra high BC hunting bullets suitable for the big .338's and .375's I've decided to look into swaging my own for personal use and if they prove to work well, I may decide to Take it further and sell some aswell, there seems to be a large gap in the market where the bullets have not kept up performance with the advances in new cartriges. To start with I'm looking at doing a .375cal rebated boattail design around 380-400grns to work in a 10 twist barrel or tighter. Overall length would be about 6 calibers, and if successful I'd move onto a .338 version of a similar design. I've been playing with some numbers on the JBM websites bullet drag calculator and it would seem not too difficult to get a BC better than 1.0 Whilst not deviating to far from convensional designs. What I am unsure of is the finer details like jacket thicknesses in order to be able survive 3400fps muzzle velocities without 'nose slump' or exploding bullet issues, yet still expand and provide good terminal performance on game. Any help in these finer design elements would be greatly appreciated and perhaps together we could produce some great bullets that we all can enjoy, maybe they could even be sold thru the LRH site once they're up and running since it would be a product created jointly by LRH members :) [/QUOTE]
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Help me design a .338-375CT projectile
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